/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/recursive_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 15:23:30,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 15:23:30,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 15:23:30,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 15:23:30,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 15:23:30,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 15:23:30,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 15:23:30,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 15:23:30,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 15:23:30,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 15:23:30,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 15:23:30,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 15:23:30,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 15:23:30,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 15:23:30,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 15:23:30,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 15:23:30,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 15:23:30,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 15:23:30,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 15:23:30,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 15:23:30,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 15:23:30,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 15:23:30,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 15:23:30,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 15:23:30,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 15:23:30,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 15:23:30,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 15:23:30,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 15:23:30,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 15:23:30,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 15:23:30,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 15:23:30,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 15:23:30,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 15:23:30,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 15:23:30,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 15:23:30,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 15:23:30,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 15:23:30,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 15:23:30,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 15:23:30,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 15:23:30,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 15:23:30,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 15:23:30,909 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 15:23:30,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 15:23:30,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 15:23:30,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 15:23:30,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 15:23:30,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 15:23:30,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 15:23:30,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 15:23:30,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 15:23:30,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 15:23:30,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 15:23:30,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 15:23:30,913 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 15:23:30,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 15:23:30,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 15:23:30,914 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 15:23:30,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 15:23:30,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 15:23:30,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:23:30,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 15:23:30,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 15:23:30,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 15:23:30,915 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation [2020-07-07 15:23:31,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 15:23:31,249 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 15:23:31,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 15:23:31,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 15:23:31,255 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 15:23:31,255 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-07 15:23:31,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6f7e05/43d2cb6518734f8090d1c2086075dc22/FLAG350b982a9 [2020-07-07 15:23:31,774 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 15:23:31,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/recursive_list.i [2020-07-07 15:23:31,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6f7e05/43d2cb6518734f8090d1c2086075dc22/FLAG350b982a9 [2020-07-07 15:23:32,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05c6f7e05/43d2cb6518734f8090d1c2086075dc22 [2020-07-07 15:23:32,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 15:23:32,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 15:23:32,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 15:23:32,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 15:23:32,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 15:23:32,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75b7432a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32, skipping insertion in model container [2020-07-07 15:23:32,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 15:23:32,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 15:23:32,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:23:32,456 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 15:23:32,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 15:23:32,492 INFO L208 MainTranslator]: Completed translation [2020-07-07 15:23:32,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32 WrapperNode [2020-07-07 15:23:32,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 15:23:32,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 15:23:32,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 15:23:32,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 15:23:32,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... [2020-07-07 15:23:32,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 15:23:32,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 15:23:32,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 15:23:32,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 15:23:32,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 15:23:32,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 15:23:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 15:23:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure err [2020-07-07 15:23:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_memory [2020-07-07 15:23:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure append [2020-07-07 15:23:32,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 15:23:32,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure err [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_memory [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure append [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 15:23:32,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 15:23:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 15:23:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 15:23:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 15:23:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 15:23:32,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 15:23:32,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 15:23:32,963 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 15:23:32,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:23:32 BoogieIcfgContainer [2020-07-07 15:23:32,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 15:23:32,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 15:23:32,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 15:23:32,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 15:23:32,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 03:23:32" (1/3) ... [2020-07-07 15:23:32,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6db7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:23:32, skipping insertion in model container [2020-07-07 15:23:32,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 03:23:32" (2/3) ... [2020-07-07 15:23:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6db7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 03:23:32, skipping insertion in model container [2020-07-07 15:23:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 03:23:32" (3/3) ... [2020-07-07 15:23:32,978 INFO L109 eAbstractionObserver]: Analyzing ICFG recursive_list.i [2020-07-07 15:23:32,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 15:23:32,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 15:23:33,012 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 15:23:33,036 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 15:23:33,036 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 15:23:33,036 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-07 15:23:33,036 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 15:23:33,036 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 15:23:33,037 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 15:23:33,037 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 15:23:33,037 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 15:23:33,054 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-07 15:23:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-07 15:23:33,069 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 15:23:33,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 15:23:33,071 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 15:23:33,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 15:23:33,078 INFO L82 PathProgramCache]: Analyzing trace with hash 2037520420, now seen corresponding path program 1 times [2020-07-07 15:23:33,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 15:23:33,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087991184] [2020-07-07 15:23:33,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 15:23:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:23:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 15:23:33,331 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 15:23:33,332 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 15:23:33,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 03:23:33 BoogieIcfgContainer [2020-07-07 15:23:33,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 15:23:33,396 INFO L168 Benchmark]: Toolchain (without parser) took 1215.56 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 134.5 MB in the end (delta: -34.2 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,398 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.78 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,401 INFO L168 Benchmark]: Boogie Preprocessor took 119.56 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 177.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,402 INFO L168 Benchmark]: RCFGBuilder took 355.13 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 158.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,403 INFO L168 Benchmark]: TraceAbstraction took 422.70 ms. Allocated memory is still 199.8 MB. Free memory was 158.0 MB in the beginning and 134.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-07 15:23:33,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.78 ms. Allocated memory is still 135.8 MB. Free memory was 100.1 MB in the beginning and 89.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.56 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 177.7 MB in the end (delta: -87.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.13 ms. Allocated memory is still 199.8 MB. Free memory was 177.0 MB in the beginning and 158.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 422.70 ms. Allocated memory is still 199.8 MB. Free memory was 158.0 MB in the beginning and 134.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int i = 1; VAL [\old(i)=6, i=1] [L37] struct list *l,m; VAL [i=1, m={2:0}] [L38] l = &m VAL [i=1, l={2:0}, m={2:0}] [L39] l->next = 0 VAL [i=1, l={2:0}, m={2:0}] [L40] l->n = 0 VAL [i=1, l={2:0}, m={2:0}] [L42] CALL, EXPR append(l, 1) VAL [\old(n)=1, i=1, l={2:0}] [L25] struct list *new_el; VAL [\old(n)=1, i=1, l={2:0}, l={2:0}, n=1] [L27] CALL, EXPR allocate_memory() VAL [i=1] [L20] return malloc(8U); VAL [\result={-2:0}, i=1, malloc(8U)={-2:0}] [L27] RET, EXPR allocate_memory() VAL [\old(n)=1, allocate_memory()={-2:0}, i=1, l={2:0}, l={2:0}, n=1] [L27] new_el = allocate_memory() VAL [\old(n)=1, allocate_memory()={-2:0}, i=1, l={2:0}, l={2:0}, n=1, new_el={-2:0}] [L29] new_el->n = n VAL [\old(n)=1, i=1, l={2:0}, l={2:0}, n=1, new_el={-2:0}] [L30] new_el->next = l VAL [\old(n)=1, i=1, l={2:0}, l={2:0}, n=1, new_el={-2:0}] [L32] return new_el; VAL [\old(n)=1, \result={-2:0}, i=1, l={2:0}, l={2:0}, n=1, new_el={-2:0}] [L42] RET, EXPR append(l, 1) VAL [append(l, 1)={-2:0}, i=1, l={2:0}, m={2:0}] [L42] l = append(l, 1) VAL [append(l, 1)={-2:0}, i=1, l={-2:0}, m={2:0}] [L43] CALL, EXPR append(l, 2) VAL [\old(n)=2, i=1, l={-2:0}] [L25] struct list *new_el; VAL [\old(n)=2, i=1, l={-2:0}, l={-2:0}, n=2] [L27] CALL, EXPR allocate_memory() VAL [i=1] [L20] return malloc(8U); VAL [\result={-1:0}, i=1, malloc(8U)={-1:0}] [L27] RET, EXPR allocate_memory() VAL [\old(n)=2, allocate_memory()={-1:0}, i=1, l={-2:0}, l={-2:0}, n=2] [L27] new_el = allocate_memory() VAL [\old(n)=2, allocate_memory()={-1:0}, i=1, l={-2:0}, l={-2:0}, n=2, new_el={-1:0}] [L29] new_el->n = n VAL [\old(n)=2, i=1, l={-2:0}, l={-2:0}, n=2, new_el={-1:0}] [L30] new_el->next = l VAL [\old(n)=2, i=1, l={-2:0}, l={-2:0}, n=2, new_el={-1:0}] [L32] return new_el; VAL [\old(n)=2, \result={-1:0}, i=1, l={-2:0}, l={-2:0}, n=2, new_el={-1:0}] [L43] RET, EXPR append(l, 2) VAL [append(l, 2)={-1:0}, i=1, l={-2:0}, m={2:0}] [L43] l = append(l, 2) VAL [append(l, 2)={-1:0}, i=1, l={-1:0}, m={2:0}] [L48] EXPR l->next VAL [i=1, l={-1:0}, l->next={-2:0}, m={2:0}] [L48] EXPR l->next->next VAL [i=1, l={-1:0}, l->next={-2:0}, l->next->next={2:0}, m={2:0}] [L48] EXPR l->next->next->n VAL [i=1, l={-1:0}, l->next={-2:0}, l->next->next={2:0}, l->next->next->n=0, m={2:0}] [L48] COND TRUE l->next->next->n == 0 VAL [i=1, l={-1:0}, l->next={-2:0}, l->next->next={2:0}, l->next->next->n=0, m={2:0}] [L48] CALL err() VAL [i=1] [L8] __VERIFIER_error() VAL [i=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...